original gears were swapped out for others but they did come with the car.(late 69 i think) we are just trying to figure out if its the original case.
A12 how did you get that date? nothing we have found decodes dates that way. looked through other 489 cases we have and decoded them all no problem.
Just took a WAG to kickstart your post......usually when I or someone is so far off with a reply then questions get answers thrown at it
Wouldn't the 8-3/4 axle housing also have a date code on the (top?) left side that would be close to the 489 date code???
Mike
